html, body, #root {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.draggable {
  -webkit-app-region: drag;
  -webkit-user-select: none;
  .card-menu, .position-content {
    -webkit-app-region: no-drag;
  }
}

.nav-container {
  -webkit-app-region: drag;
  -webkit-user-select: none;
}

button {
  -webkit-app-region: no-drag;
}

.electron-btn-group, .menu-group {
  -webkit-app-region: no-drag;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.MuiButtonBase-root.custom-button {
  box-shadow: none;
  &:hover {
    box-shadow: none;
  }
}

.flex-container {
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
  justify-content: center;
  align-items: center;
}

.custom-card {
  position: relative;
  background: white;
  box-shadow: 0px 6px 18px 0px rgba(0,0,0,0.2);
  border-radius: 8px;
  display: flex;
  max-width: 700px;
  max-height: 500px;
  min-width: 700px;
  min-height: 500px;
  box-sizing: content-box;
  .card-menu {
    display: flex;
    flex-direction: row;
    box-sizing: border-box;
    justify-content: space-between;
    max-width: 291px;
    min-height: 28px;
  }
}

.short-title.en > span {
  color: white !important;
}

.short-title {
  display: flex;
  flex-direction: column;
  top: 38px;
  left: 36px;
  position: relative;
  z-index: 2;
  .title {
    font-size: 24px;
    line-height: 29px;
    color: #000;
  }
  .subtitle {
    font-size: 14px;
    line-height: 16px;
    color: #666;
  }
  .build-version {
    font-size: 9px;
    line-height: 16px;
    color: #666;
  }
}

.setting-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  flex-direction: column;
}

.cover {
  max-width: 350px;
  min-width: 350px;
  background: #F5F7F8;
  border-radius:8px 0px 0px 8px;
  position: relative;

  .build-version {
    position: absolute;
    right: 1.5rem;
    bottom: 1.5rem;
    font-size: 14px;
    color: #666;
  }

  .cover-placeholder-web {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
  }

  .cover-en {
    display: block;
    background-repeat: no-repeat;
    height: 500px;
    width: 350px;
    background-size: contain;
    position: absolute;
    background-image: url("./assets/cover-us.png");
  }

  .cover-cn {
    display: block;
    background-repeat: no-repeat;
    height: 500px;
    width: 350px;
    background-size: contain;
    position: absolute;
    background-image: url("./assets/cover-cn.png");
  }
}

.cover #local {
  border-bottom-left-radius: 8px;
  border-top-left-radius: 8px;
}

.align-center {
  justify-content: center;
}

.flex-item {
  display: flex;
  flex: 1;
  flex-direction: column;
  box-sizing: border-box;
}

.internal-card {
  position: absolute;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  position: fixed;
  align-items: center;
  touch-action: none;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
  -webkit-tap-highlight-color: transparent;
}

.flex-item.card {
  position: relative;
  max-width: 350px;
  min-width: 350px;
}

.position-top {
  position: relative;
  top: 23px;
  left: 29px;
}

.flex-direction-column {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.flex-direction-row {
  display: flex;
  flex-direction: row;
  box-sizing: border-box;
}
.position-content {
  top: 45px;
  bottom: 53px;
  position: relative;
  justify-content: space-between;
  height: 350px;
  margin: 0 55px;
  max-width: 240px;
  padding: 0 5px;
  box-sizing: content-box;
  display: flex;
  align-items: center;
  .MuiButtonBase-root.custom-button {
    width: 250px;
    height: 40px;
    background: #44A2FC;
    border-radius: 22px;
    text-transform: none;
    &:hover {
      background: #82C2FF;
    }
    position: relative;
    bottom: -14px;
  }
}

.class-title {
  font-size: 14px;
  color: #666;
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  top: 10px;
  width: 100%;
  .room-name {
    line-height: 20px;
  }
}

.classroom {
  display: flex;
  flex-direction: column;
  position: relative;
  background: white;
  box-shadow: 0px 6px 22px 0px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  flex: 1;
  height: 100%;
  min-width: 990px;
  // min-height: 706px;
  .live-container {
    flex: 1;
    position: relative;
  }
}

.live-board {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

@media screen and (max-width: 1366px) and (max-height: 768px) {
  .classroom {
    min-width: 990px;
    // min-height: 706px;
  }
}

@media screen and (min-width: 1366px) and (min-height: 768px) {
  .classroom {
    min-width: 1366px;
    min-height: 768px;

    // TODO: comment for brand resolution
    // .live-board {
    //   min-height: 720px;
    // }

    // .chat-board {
    //   min-height: 402px;
    // }
  }
}

.home-cover-web {
  background: #EEF1F3;
  display: flex;
  flex-direction: column;
  position: relative;
  .web-menu {
    display: block;
    width: 100%;
    position: absolute;
    top: 40px;
    .web-menu-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      min-width: 700px;
      margin: 0 40px;
      .short-title {
        top: 0px;
        left: 0px;
        position: relative;
      }
    }
  }
}

@media screen and (max-width: 780px) {
  .home-cover-web {
    min-width: 780px;
  }
}

@media screen and (max-height: 768px) {
  .home-cover-web {
    min-height: 768px;
  }
}

.flex-item.cover {
  display: flex;
  .preview-video {
    flex: 1;
    width: 100%;
    height: 100%;
    display: flex;
    overflow: hidden;
    .student-placeholder,
    .teacher-placeholder {
      border-top-left-radius: 8px;
      border-bottom-left-radius: 8px;
      display: flex;
      flex: 1 1;
      position: absolute;
      height: 100%;
      width: 100%;
      &::before {
        height: 100%;
        width: 100%;
        background-size: 155px;
      }
    }
  }
}